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arXiv · 2305.00810

Shuffle algebras and their integral forms: specialization map approach in types $B_n$ and $G_2$

Yue Hu·Alexander Tsymbaliuk
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Abstract

We construct a family of PBWD bases for the positive subalgebras of quantum loop algebras of type $B_n$ and $G_2$, as well as their Lusztig and RTT (for type $B_n$ only) integral forms, in the new Drinfeld realization. We also establish a shuffle algebra realization of these $\mathbb{Q}(v)$-algebras (proved earlier in arXiv:2102.11269 by completely different tools) and generalize the latter to the above $\mathbb{Z}[v,v^{-1}]$-forms. The rational counterparts provide shuffle algebra realizations of positive subalgebras of type $B_n$ and $G_2$ Yangians and their Drinfeld-Gavarini duals. All of this generalizes the type $A_n$ results of arXiv:1808.09536 by the second author.

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Yue Hu, Alexander Tsymbaliuk. 2023-05-01. Shuffle algebras and their integral forms: specialization map approach in types $B_n$ and $G_2$. https://doi.org/10.1093/imrn%2Frnae029

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